Why the Eyedro Business 3-Phase Monitor (E5B-EW-E3-SUB) Matters

If you run a shop, café, small factory, solar-powered building, or multi-tenant space, every kilowatt-hour you can track—and cut—shows up on your bottom line. The Eyedro Business 3-Phase Solar & Energy Monitor gives you that control: a business-grade, Ethernet/Wi-Fi-connected gateway designed to reveal where your electricity spend actually goes and how your three-phase loads behave in the real world. Unlike consumer monitors that stop at whole-home guessing, Eyedro’s business line is engineered for granular visibility, net metering, and solar workflows.

In this Eyedro Business 3-Phase Solar & Energy Monitor review, we’ll break down installation, data quality, and how to turn its dashboards into ROI. We’ll explore who it’s for (and who it isn’t), run through real-life savings scenarios, answer People-Also-Ask questions, and compare it with a popular alternative you may be considering.

Product Overview

The model in this review—Eyedro E5B-EW-E3-SUB—is a Business 3-phase energy monitoring gateway with Ethernet/Wi-Fi connectivity. As the listing states, current sensors (CTs) are sold separately. That flexibility lets you pair the gateway with the right CT amperage for your main service or branch circuits. The Eyedro cloud dashboard helps translate your raw power into actionable insight: identify expensive peaks, catch runaway equipment, validate demand response, and reconcile your utility bill with real-time and historical data.

If the letters and numbers feel cryptic, here’s the short version: E5B-EW-E3-SUB is the Eyedro Business gateway for 3-phase environments (common in commercial power), with both Ethernet and Wi-Fi, designed to operate with external CTs you select for your installation. It’s built for facilities managers, solar installers, and business owners who need high-resolution usage and net metering/solar directionality to make reliable, money-saving decisions.

Key Features & Business Benefits

• 3-Phase Ready: Supports three-phase environments typical in commercial and light industrial sites. Monitor mains and key branch circuits (with appropriate CTs).
• Solar & Net Metering: Track both consumption and production; understand true self-consumption vs export, and quantify the value of your solar.
• Ethernet & Wi-Fi: Hardwire for reliability or deploy wirelessly—ideal when your panel location isn’t near your networking gear.
• High-Resolution Data: Granular readings let you pinpoint when loads start/stop, correlate spikes with operations, and verify savings from equipment changes.
• Cloud Dashboard & Reports: Eyedro’s online tools surface usage, cost estimates, and trends. Export data for audits, forecasts, and sustainability reporting.
• Flexible CT Strategy (Sold Separately): Match sensor amperage to main service or specific circuits for the precision you need without overpaying for sensors you won’t use.
• Alerts & Anomaly Detection: Configure thresholds, get notified about unusual consumption, off-hours usage, or unexpected demand spikes.
• Net Metering Transparency: Validate utility bills by comparing them with your own timestamps—especially during peak and demand charge windows.
• Fits Small to Mid-Size Sites: Ideal for restaurants, retail, warehouses, offices, makerspaces, clinics, and solar-equipped buildings.
• Scalable Insight: Start with mains monitoring; add CTs to critical equipment (HVAC, compressors, ovens, pumps) as your questions evolve.

Technical Specifications (What You Should Know Before Buying)

Note: Always consult a licensed electrician for CT sizing and installation. Business panels vary widely; proper CT selection and correct phasing are essential for accurate results and electrical safety.

Pros & Cons

Performance Tests & Real-World Scenarios

To evaluate the Eyedro Business 3-Phase Solar & Energy Monitor for typical SMB use, we model three scenarios—a café, a small manufacturing space, and a solar-powered office—focusing on cost visibility, loss detection, and demand management. These are representative examples designed to show what you can do with a business-grade monitor like Eyedro.

Scenario 1: Café & Bakery — Catching Off-Hours Loads

A neighborhood café with a 3-phase panel runs a 12-kW oven, refrigeration, espresso machines, HVAC, and a small dish station. The owner’s bill shows unusually high nighttime consumption. With Eyedro on the mains and CTs on refrigeration and HVAC, the dashboard reveals a consistent 1.5 kW overnight draw—tracked to a “temporarily disabled” eco schedule on an older reach-in cooler and a makeup air unit left in manual.

• Action: Reset cooler schedule, return makeup air to auto, and add signage for close-down checks.
• Result: ~1.0–1.4 kW reduced for 9 hours/night ≈ 9–12.6 kWh per night. At $0.18/kWh, that’s ~$49–$68/month saved.
• Why Eyedro Helps: Granular, time-stamped power data converts suspicion into proof—and savings.

Scenario 2: Light Manufacturing — Demand Peaks & Shift Staggering

A small workshop runs a 5-HP compressor, CNC router, and multiple dust collectors; demand spikes trigger demand charges. Eyedro’s data shows the compressor and the largest dust collector always overlap during shift changeovers. By staggering startup and adding a rule to delay the dust collector by 12 minutes when the compressor starts, the facility flattens peaks.

• Action: Stagger high-draw equipment; add SOPs at shift changes.
• Result: Lower 15-minute peak windows; demand charges trimmed by 10–18% depending on tariff.
• Why Eyedro Helps: Peak visualization identifies exactly which loads to separate.

Scenario 3: Solar-Powered Office — Net Metering Confidence

A 30-person office with rooftop solar wants to prove daytime self-consumption and optimize HVAC schedules to align with peak solar production. With Eyedro tracking mains and solar, the team quantifies self-consumption vs export and tweaks thermostat setbacks to pull more load into sunny hours without hurting comfort.

• Action: Adjust HVAC schedules; run non-critical tasks during high production windows.
• Result: Higher solar self-consumption rate; export falls while internal usage rises during solar peaks—a tangible ROI improvement.
• Why Eyedro Helps: Directional awareness and clear net metering views translate “good intentions” into data-driven scheduling.

Tip: Correlate Eyedro trends with operations (POS reports, shift logs, HVAC schedules) to separate behavioral from mechanical causes. You’ll fix low-cost policy issues first, then tackle cap-ex (e.g., variable-speed drives, premium efficiency motors) with confidence.

Buyer Feedback: What Facilities Managers & Owners Say

Common buyer themes for Eyedro’s business line tend to revolve around better-than-expected insight after implementation. Managers report:

• Clarity: “We finally see where the baseline goes.”
• Accountability: “Departments now see their cost impact.”
• Smoother maintenance: “We spot failing gear before it fails.”
• Solar truth: “We stopped guessing about self-consumption.”

As with any commercial-grade monitor, several reviewers note the value of professional installation and correct CT selection. Those steps set the stage for accurate, trusted data.

Competitor Comparison

We compared the Eyedro Business 3-Phase gateway to a popular SMB/home alternative to help you decide. For deeper consumer-oriented coverage, see our internal review linked below.

Takeaway: If your facility has 3-phase power and you need net-metering/solar detail with enterprise-leaning connectivity, the Eyedro Business gateway is the right tool. If you run a single-phase home and want sub-circuit monitoring, the consumer-first alternative can be compelling—see our Emporia review above.

FAQ — People Also Ask

Does the Eyedro Business 3-Phase monitor work with solar?

Yes. This Eyedro Business 3-Phase Solar & Energy Monitor supports solar and net metering use cases. With directional awareness you’ll see consumption vs. production to validate ROI and optimize self-consumption.

Do I need to buy sensors (CTs) separately?

Correct. The E5B-EW-E3-SUB listing specifies that current transformers are sold separately. Your electrician will size CTs to your mains and any branch circuits you want to monitor.

Can I install it myself?

We strongly recommend using a licensed electrician. Panels vary, and correct CT selection, phasing, and code compliance are essential for accurate, safe results.

Does it require Ethernet or can I use Wi-Fi?

Either. The gateway supports both Ethernet and Wi-Fi, so you can hardwire for reliability or connect wirelessly when cabling is inconvenient.

Will Eyedro help reduce demand charges?

Eyedro itself doesn’t change your tariff, but it reveals exactly when and why your peaks occur. Many sites flatten peaks by staggering large loads, altering schedules, or adding controls—using Eyedro’s data to guide decisions.

Can I export my data?

Eyedro’s cloud dashboard provides historical views and exports for audits and reporting. Consult the Eyedro documentation for the latest export formats and limits.

Is there a subscription?

Eyedro provides a web dashboard for data visualization and reporting. Core functionality is available without showing live prices here; features evolve, so check the latest details on the product page before purchase.

What if I only have single-phase power?

You likely don’t need a business 3-phase gateway. See our internal coverage of consumer-focused options like the Emporia Vue 3 linked above.

Buying Guide: Picking the Right Business-Grade Energy Monitor

Before you buy, answer these questions with your electrician and operations team:

1. What is your service type? Verify 3-phase vs single-phase. The Eyedro Business variant here is for 3-phase sites.
2. Where is the value? Decide if you need just mains, or mains plus key loads (HVAC, compressors, ovens). This drives CT count and sizing.
3. Connectivity & IT: Can you hardwire Ethernet, or is Wi-Fi preferable? Note any network security policies for outbound traffic.
4. Solar & Net Metering: If you export, ensure directional monitoring is configured and documented.
5. Compliance & Safety: Always engage a licensed electrician for panel work and CT selection.
6. Reporting Needs: Who needs the reports (finance, ops, sustainability)? Agree on cadence and KPIs (kWh/occupant, kWh/sq-ft, peak kW).
7. Action Plan: Decide in advance what you’ll do with the data—scheduling, setpoints, sequencing—so savings start in week one.

Final Verdict: A Serious Tool for Serious Energy Savings

If your facility has 3-phase power and you care about net metering, solar visibility, and demand control, the Eyedro Business 3-Phase Solar & Energy Monitor is a smart, scalable choice. The model we reviewed—E5B-EW-E3-SUB—balances connectivity flexibility (Ethernet/Wi-Fi) with CT modularity (sold separately) so you can right-size the installation to your panel and goals. It’s not a toy; paired with a good electrician and an action plan, it becomes a reliable engine for cutting waste and proving ROI.

• Best for: SMBs, solar businesses, light industrial, multi-tenant buildings.
• Not for: Basic single-phase homes that only want a big-picture view.
• Bottom line: High-resolution insight that pays you back when you act on it.

Read Also

• Emporia Vue 3 Home Energy Monitor Review (2025 Guide)

Useful References

• Wikipedia: Three-phase electric power
• Wikipedia: Net metering

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